Question about Yamaha Emx88s Powered PA Mixer System

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Yamaha 860 st

When i crank it up the speakers bang and it sounds like the speakers want to blow up.Its fine at low volume . but as soon as i crank it up it happens. any help could be appriciated. acousticjamdwm@yahoo.com my name is DOUG

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  • accessrm Apr 27, 2009

    same problem as described below. Is that a defect in this particular model. To avoid this in the future, what wouild you suggest may have cuased this?

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This could be the pre amp transistor or the power amp , it will need to be tested and other components tested also to make sure they are not causing the pre amp to fail or the power amp to fail
if its the pre amp it will be cheap , if its the power amp then it won't be cheap , other small components are cheap

electech

Posted on Oct 31, 2008

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Same problem here, low humming from far left and right speakers. Crank volume up to 40 gets rid. Shame this was is a good setup. Now to find my receipt and and make the most of the Aldi 3 year warranty. I have tried it in different poer outlets, with no discernible change, change func from ipod, to radio to aux same issue, my guess is faulty units

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The volume has suddenly become very low and buzzy.I can turn it all the way up and it's still quite low.However the tuner FM works absolutley fine through the speakers.The dvd and audio input jacks however...


You need to A) define the hardware; B) consider what is common to the external inputs that could possibly affect their volume. Speakers are common to everything and have no way of knowing what the source is, so forget about them.

Look at every control and indicator. Understand what the mean and do. Lower the volume to something reasonable before flipping any switch you dont understand.

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I am able to get sound through my speakers when I play a DVD or when I select the TV as a source but I have to crank the volume on the receiver up almost to the max to hear either source.


NEVER turn the volume up to MAX for testing. You'll destroy something when you finally find the switch that's wrong.

Can you provide a model number instead of a dubious power spec to describe the unit so we can know specifically what controls it has?

Has it ever worked?

Does the speaker adjustment routine (guessing it has one) make tone in all speakers?

What about the onboard FM? Is that too weak? If not, you need to figure out why external sources are too low.

I'd suspect a Tape Monitor is active when it shouldn't be. Or MUTE is on.

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Yamaha Mg12-4fx 12-Channel Mixer


ok look here on page 21 & 22 of 32 http://www2.yamaha.co.jp/manual/pdf/pa/english/mixers/mg12_4fxe.pdf

section #5," ST output"
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section #1, "line or mic input"
this is the input for the guitar or a mic , but only one(mic or line ) per input # at a time

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My system shot down during a movie


The reason why your receiver is going in protect is because there is a short circuit happening. This would either be on your speaker wires, speakers or receiver itself. What you want to do to check would be:
1. Unhook all sources and speakers from your receiver.
2. Turn on your receiver and crank up the volume to maximum, if your receiver does not shutdown or go on protect then the receiver is OK. If it does shutdown and go on protect then its an internal problem on the receiver and you would need to send that over to an authorized service center.
3. Hook up a source and 1 speaker. Play something from the source or the fm tuner, Crank Up the volume to about 46 or 47 volume. If the receiver does not shutdown, its good.
4. Hook up a second speaker and repeat the process until you encounter the pop and shut down
if for example you encounter the pop on the 4th speaker, try changing the speaker wires.
5. If the receiver still shuts down then it would be a short on the speaker itself and it would need to go to an authorized service center.

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Just bought a Philips home theatre system HTS3544 low sound?


You may also need to change the speaker set up. Go to DISC setting (one of the top selections on the remote) make sure you have no Disc in the DVD player. When in this mode press setup on the remote. On this menu you will have a option to adjust the speaker volume.

I had to increase my speaker volumes to get better sound. This setting is not accessible if you try to do the set up in other than DISC setting. Be sure to check the SURROUND setting. The SURROUND button on the remote will toggle between stereo and surround as stated in a previous post.

ST

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Very low volume.


If you get the remote look under menu see sound settings, otherwise somewhere under menu should be a reset option do try that

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Try shutting the limiter switch off

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2 Answers

PROTECTION MODE


The unit may be experiencing an overload caused by a short circuit, internally or externally. Try disconnecting all the speakers, then turning up the volume. If nothing happens, connect one speaker at a time and turn up the volume to see if you get more sound. You may have a speaker that has shorted internally and this will help you discover the bad one. However, if when you have all the speakers disconnected, and the unit still goes into protection mode with the volume up, then there is a problem with the unit itself.

Hope this helps, and please rate my advice, good OR bad.

Good luck!

Feb 04, 2008 | Home Theater Systems

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